[SDPhantom]

I can't imagine 32- and 64-bit performing any different from each other. All that's really changed is the size of the memory registers, which means, more memory can be accessed. This doesn't mean an increase in how much room a 32-bit integer takes. Also remember, 64-bit integers existed long before the migration to 64-bit processors. The size of an allocated space of memory variable and the size of the memory registers are irrelevant to each other.

The only way there could be any difference between 32- and 64-bit WoW is they could be compiled between 2 different sets of code, with different ways of doing things from one to the other instead of having code written for 32-bit compiled into 64-bit binaries.